Hot water bottle



Nov. 5, 194 J. R. BUCHANAN- HOT WATER BOTTLE File d Sept. 16, 1938itorney- Patented Nov, 5, 1940 UNITED STATES PATENT OFFICE ApplicationSeptember 16, 1938, Serial No. 230,267 In Great Britain October 7, 19371 Claim.

This invention relates to hot water bottles of rubber or the likematerial, and has for its object to reduce the danger of scalding of theperson during the filling of hot water bottles from 5 a kettle or othervessel or tap.

I attain the said object by the means illustrated in the accompanyingdrawing, wherein Figure 1 is a fragmentary side View in section of theupper portion of a hot water bottle.

Figure 2 is a similar view with the stopper removed and a part shown inanother position.

Figure 3 is a fragmentary side view in section of a portion of a hotwater bottle and illustrates a modification of detail.

Figure 4 is a fragmentary side view in section of a portion of a hotwater bottle and illustrates another modification of detail.

Figure 5 is a detached, fragmentary side View in section of a vent tubeand illustrates another modification of detail.

Figure 6 is a fragmentary side view in section of the mouth of a hotwater bottle and illustrates a further modification of detail.

Referring to the drawing, in the construction shown in Figures 1 and 2,as applied by way of example to a hot water bottle I of india rubberhaving a mouth 2 adapted to serve as a filling funnel, an internallyscrew-threaded neck 3 into which a stopper 4 is screwable, and a holdinglug 5 on the mouth 2, I provide in the wall of the mouth 2 a hole inwhich the end 6 of a flexible rubber tube I is engaged from the insideof the mouth 2. The end 6 may be permanently secured in the said hole byvulcanising or other suitable means, or may be detachably held thereinby an annular flange 8 or by two annular flanges 9 and I0, Figure 3,provided on the rubber tube itself or by'two annular flanges II and I2,Figure 4, provided on a rubber sleeve I3 attached to the tube, the saidtwo flanges holding the wall of the bottle mouth between them round thehole in the said wall. The tube 7 is externally of smaller diameter thanthe internal diameter of the neck 3. The tube 1 is of sufficient lengthto bend in a downward direction and extend downwards through the neck 3to a short distance beyond the bottom of the neck 3 as shown in Figure2, its end I4 therefore being car pable of lying inside the hot waterbottle I near the neck 3 thereof The end I4 has a V-notch cut into it toform two axial, diametrically situated notches I and I6 alternating withtwo axial, diametrically situated teeth or prongs I1 and I8.

r" In operation, when it is desired to fill the hot water bottle I,after removal of the screw stopper 4, the tube 1 is bent and its end l4pushed through the mouth 2 and neck 3 until it is in the position shownin Figure 2 wherein the end I4 is inside the hot water bottle I. The hotwater bottle is then held suspended by the holding lug 5 and hot wateris poured into the mouth 2 in the usual manner and flows into the hotwater bottle I through that portion of the aperture through neck 3 whichis not occupied by the tube 1. The air and steam displaced by the water10 has at all times a free passage through the tube I and can thereforeescape without bubbling up through the water flowing down' the mouth 2and through the neck 3. The air and steam cannot come into contact withthe hand holding the hot water bottle by the lug 5 and the absence ofbubbling ensures a complete absence of splashing or shooting back of thewater in the mouth 2 and neck 3. The notches I5 and I6 in the end I4 ofthe tube 1 ensure that the air and steam still have an unrestrictedpassage into and through the tube I even in the event of water, whichruns down the exterior thereof, forming a water plug or piston at thelower extremity of the end I4; The teeth or prongs I1 and I8 assist inpreventing an accumulation of water on the end I4. Holes or slots I9,Figure 5, may be provided at the lower end of the tube instead of thesaid notches. When the hot water bottle has been filled, the tube I iswithdrawn from the neck 3 whilst still remaining attached to the Wall ofthe mouth 2. This leaves the neck 3 free to receive the stopper 4 asshown in Figure 1, and after the stopper has been screwed in, the freepart of the tube I is disposed within the mouth 2 by coiling it insidethe said mouth.

In a modification, instead of providing the hole for the tube in thmouth wall, it may be I provided in a lug 20, Figure 6, provided on thelip of the mouth of the hot water bottle in addition to the usualholding lug, and the tube be permanently or detachably connected to thelug 20.

I- claim:

A hot water bottle comprising in combination, a mouth forming a fillingfunnel, a neck for the passage of hot water from the fillingfunnel tothe interior of the hot water bottle, a stopper insertable in the saidneck for closing the same, a flexible vent tube permanently connected atone end to the wall of said filling funnel and having said end extendingthrough said wall with its orifice facing in a direction substantiallyat right angles to the longitudinal axis of the bottle, the tube, whenin operative positiornbeing located on the inside of the bottle with itsfree end eX- insertable in the said neck only after the free end of thesaid tube has been withdrawn and therefore the said tube is completelyoutside the said interior and neck whilst remaining attached to thefilling funnel.

JAMES ROBERT BUCHANAN.

